Miley Cyrus Plans to “Work” on Valentine’s Day

 Jason Merritt/Getty Images

Miley Cyrus — who has been spotted smooching Aussie actor (and Last Song costar) Liam Hemsworth — doesn't have any plans for Valentine's Day this year.

"Work," she told when asked how she'll spend the day. "I'm really boring."

During an E! pre-Grammy show, she denied rumors that she's engaged – or that she's been wearing a promise ring. "I bought it myself," Cyrus, 17, said of the bling. "And I got it made in London, and everyone thought it was diamond when it wasn't. It was the cheapest thing ever … So if I do get a promise ring, it better be real!"

Cyrus — who told Us she looked forward to seeing Lady Gaga the most at the Grammys — said she tried on three dresses for Sunday's show.

"I hate trying on clothes – I cannot do it!" she said on the red carpet. "They pin you forever."

She eventually settled on a Herve Leger by Max Azria frock.

"I like it because it wasn't stuffy," Cyrus told Us. "I wanted to be edgy."

Sign up now for the Us Weekly newsletter to get breaking celebrity news, hot pics and more delivered straight to your inbox!

Want stories like these delivered straight to your phone? Download the Us Weekly iPhone app now!